If you’ve never given yourself (or a someone else) a quick haircut, you’ll soon realize why cosmetology school exists. Anyone who has gone to the barber knows that they use different clippers to measure how much hair comes off. Most people run into trouble while cutting their hair at home because they start with too short of a guard, Jordan said. Once it’s gone, it’s gone. As always, practice makes perfect to nail a quarantine haircut at home, so don’t beat yourself up too badly if it looks like you cut your hair with a weed whacker as opposed to an electric razor.